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To maintain the pH of the culture | |
A. | organic acid such as citric, fumaric, malic and succinic acid is used [Wrong Answer] |
B. | synthetic buffers such as Tris, MES or HEPS are used [Wrong Answer] |
C. | both (a) and (b) [Correct Answer] |
D. | ammonium salts are used [Wrong Answer] |